DTC Logic

Diagnosis Procedure
1.CHECK USB HARNESS
Visually check USB harness.
U1243 display unit
U1255 satellite radio tunerCompass
Wiring Diagram - WITH HOMELINK UNIVERSAL TRANSCEIVER
Wiring Diagram - WITHOUT HOMELINK UNIVERSAL TRANSCEIVER
...
U1300 AV comm circuit
Description
U1300 is indicated when a communication signal malfunction occurs. U1300 is
indicated along with DTCs that identify components connected to the AV
control unit through communication lines. Determine the possible malfunction
cause from the table below.
SELF-DIAGNOSIS RESULTS DISPL ...
Can communication system
System Description
CAN communication is a multiplex communication system. This enables the
system to transmit and receive large quantities of data at high speed by connecting control units with two
communication lines (CAN-H and CAN-L).
Control units on the CAN network transmit signals usi ...